light sensitive cells

Asked by  | 4th Jul, 2008, 12:58: PM

Expert Answer:

Rod cells, or rods, are photoreceptor cells in the retina of the eye that can function in less intense light than can the other type of photoreceptor, cone cells. Since they are more light-sensitive, rods are responsible for night vision. Named for their cylindrical shape, rods are concentrated at the outer edges of the retina and are used in peripheral vision. There are about 120 million rod cells in the human retina.

Answered by  | 4th Jul, 2008, 08:03: PM

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